Messaging apps are overtaking social networks to become the dominant platforms on phones

The messaging-app era is here. Social networks are old-hat in a world where messaging apps like Facebook Messenger and LINE are increasingly mediating all sorts of digital interactions in our lives.

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In fact, messaging apps hit an important milestone at the end of March, according to estimates we prepared at BI intelligence, Business Insider's subscription research service. For the first time, the top four messaging apps combined have just as many users as the top four social networks. (See chart on the right.)

Put together, WhatsApp, Facebook Messenger, WeChat, and Viber have 2.125 billion monthly active users globally (users who accessed the apps at least once in a 30-day period). And these are all mobile users.

That's compared to the same number, 2.125 billion, users of Facebook, Twitter, LinkedIn, and Instagram combined. But these numbers also include millions of computer-only users!

Facebook's VP of messaging products, David Marcus, announces new apps and features for Messengerscreenshot

In the United States, where messaging apps were late to catch on, many tech-industry observers still misunderstand why these apps are so powerful. They are not just free alternatives to SMS texting. Smartphone owners turn to messaging apps for much more than instant messages. Messaging app users trade emojis, digital stickers, GIFs, video clips, photos, news, and video calls. Increasingly, these apps are also emerging as hubs for e-commerce and business-to-customer interactions. Facebook Messenger's recent reinvention was all about encouraging these expanded uses.

A note on the chart above, and the data underlying it: while there will be audience overlap among these services (in other words, many WhatsApp users will also use Facebook Messenger, and so on) we believe there is actually less overlap among different messaging apps' user bases than there are for social networks. In part that's because apps like WeChat and Viber are geographically restricted. The former is mostly used in China, and the latter is strong in western markets, etc. In any case, the point is: messaging apps' total audience advantage is likely greater than what this chart indicates.

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This post originally appeared in DIGITAL MEDIA INSIDER, a daily newsletter on the digital media industry produced by BI Intelligence, a premium research service from Business Insider. Learn more about DIGITAL MEDIA INSIDER or sign up today to receive the next issue in your inbox.